It`s not fully tested for biascurrents for the front with the higher rails, but I`ll make myself a inputcard and try it out.
The output schematic is from Electrocompaniet AW 120 DMB, with one extra op-pair and emitterresistors

Lasy Cat, sorry for your mistaken name....and thanks for answer. 50V. 0.5A per rail are the just power rating Or it could be less? I haven't tranny with so such output but i have 2 nice Rcore 500va 2x36V...

It`s not fully tested for biascurrents for the front with the higher rails, but I`ll make myself a inputcard and try it out.
The output schematic is from Electrocompaniet AW 120 DMB, with one extra op-pair and emitterresistors

SSA's front-end collector current is not rails potential dependant as long as they are higher than 15 V. The only limiting parameters are cascode BJT's Vcemax and Pmax.